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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@388 65c4cc65-6c06-0410-ace0-fbb531ad65f3
1.0
Mark Spencer 24 years ago
parent 364f873573
commit 5da86a5290
6 changed files with 434 additions and 79 deletions
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157
channels/gentone-ulaw.c
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@ -0,0 +1,157 @@
/* Generate a header file for a particular
single or double frequency */
#include <stdio.h>
#include <math.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#define CLIP 32635
#define BIAS 0x84
static float loudness=16384.0;
static int calc_samples(int freq)
{
int x, samples;
/* Calculate the number of samples at 8000hz sampling
we need to have this wave form */
samples = 8000;
/* Take out common 2's up to six times */
for (x=0;x<6;x++)
if (!(freq % 2)) {
freq /= 2;
samples /= 2;
}
/* Take out common 5's (up to three times */
for (x=0;x<3;x++)
if (!(freq % 5)) {
freq /= 5;
samples /=5;
}
/* No more common factors. */
return samples;
}
/*
** This routine converts from linear to ulaw
**
** Craig Reese: IDA/Supercomputing Research Center
** Joe Campbell: Department of Defense
** 29 September 1989
**
** References:
** 1) CCITT Recommendation G.711 (very difficult to follow)
** 2) "A New Digital Technique for Implementation of Any
** Continuous PCM Companding Law," Villeret, Michel,
** et al. 1973 IEEE Int. Conf. on Communications, Vol 1,
** 1973, pg. 11.12-11.17
** 3) MIL-STD-188-113,"Interoperability and Performance Standards
** for Analog-to_Digital Conversion Techniques,"
** 17 February 1987
**
** Input: Signed 16 bit linear sample
** Output: 8 bit ulaw sample
*/
#define ZEROTRAP /* turn on the trap as per the MIL-STD */
#define BIAS 0x84 /* define the add-in bias for 16 bit samples */
#define CLIP 32635
static unsigned char linear2ulaw(short sample) {
static int exp_lut[256] = {0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,
4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7};
int sign, exponent, mantissa;
unsigned char ulawbyte;
/* Get the sample into sign-magnitude. */
sign = (sample >> 8) & 0x80; /* set aside the sign */
if (sign != 0) sample = -sample; /* get magnitude */
if (sample > CLIP) sample = CLIP; /* clip the magnitude */
/* Convert from 16 bit linear to ulaw. */
sample = sample + BIAS;
exponent = exp_lut[(sample >> 7) & 0xFF];
mantissa = (sample >> (exponent + 3)) & 0x0F;
ulawbyte = ~(sign | (exponent << 4) | mantissa);
#ifdef ZEROTRAP
if (ulawbyte == 0) ulawbyte = 0x02; /* optional CCITT trap */
#endif
return(ulawbyte);
}
int main(int argc, char *argv[])
{
FILE *f;
int freq1, freq2;
float wlen1, wlen2;
float val;
int x, samples1, samples2, samples=0;
char fn[256];
if (argc < 3) {
fprintf(stderr, "Usage: gensound <name> <freq1> [freq2]\n");
exit(1);
}
freq1 = atoi(argv[2]);
if (argc > 3)
freq2 = atoi(argv[3]);
else
freq2 = 0;
wlen1 = 8000.0/(float)freq1;
samples1 = calc_samples(freq1);
printf("Wavelength 1 (in samples): %10.5f\n", wlen1);
printf("Minimum samples (1): %d (%f.3 wavelengths)\n", samples1, samples1 / wlen1);
if (freq2) {
wlen2 = 8000.0/(float)freq2;
samples2 = calc_samples(freq2);
printf("Wavelength 1 (in samples): %10.5f\n", wlen2);
printf("Minimum samples (1): %d (%f.3 wavelengths)\n", samples2, samples2 / wlen2);
}
samples = samples1;
if (freq2) {
while(samples % samples2)
samples += samples1;
}
printf("Need %d samples\n", samples);
snprintf(fn, sizeof(fn), "%s.h", argv[1]);
if ((f = fopen(fn, "w"))) {
if (freq2)
fprintf(f, "/* %s: Generated from frequencies %d and %d \n"
" by gentone. %d samples */\n", fn, freq1, freq2, samples);
else
fprintf(f, "/* %s: Generated from frequency %d\n"
" by gentone. %d samples */\n", fn, freq1, samples);
fprintf(f, "static unsigned char %s[%d] = {\n\t", argv[1], samples);
for (x=0;x<samples;x++) {
val = loudness * sin((freq1 * 2.0 * M_PI * x)/8000.0);
if (freq2)
val += loudness * sin((freq2 * 2.0 * M_PI * x)/8000.0);
fprintf(f, "%3d, ", (int) linear2ulaw(val));
if (!((x+1) % 8))
fprintf(f, "\n\t");
}
if (x % 15)
fprintf(f, "\n");
fprintf(f, "};\n");
fclose(f);
printf("Wrote %s\n", fn);
} else {
fprintf(stderr, "Unable to open %s for writing\n", fn);
return 1;
}
return 0;
}

4
channels/gentone.c
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@ -69,10 +69,10 @@ int main(int argc, char *argv[])
if ((f = fopen(fn, "w"))) { if ((f = fopen(fn, "w"))) {
if (freq2) if (freq2)
fprintf(f, "/* %s: Generated from frequencies %d and %d \n" fprintf(f, "/* %s: Generated from frequencies %d and %d \n"
" by gensound. %d samples */\n", fn, freq1, freq2, samples); " by gentone. %d samples */\n", fn, freq1, freq2, samples);
else else
fprintf(f, "/* %s: Generated from frequency %d\n" fprintf(f, "/* %s: Generated from frequency %d\n"
" by gensound. %d samples */\n", fn, freq1, samples); " by gentone. %d samples */\n", fn, freq1, samples);
fprintf(f, "static short %s[%d] = {\n\t", argv[1], samples); fprintf(f, "static short %s[%d] = {\n\t", argv[1], samples);
for (x=0;x<samples;x++) { for (x=0;x<samples;x++) {
val = loudness * sin((freq1 * 2.0 * M_PI * x)/8000.0); val = loudness * sin((freq1 * 2.0 * M_PI * x)/8000.0);

15
ecdisa.h
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@ -0,0 +1,15 @@
/* ecdisa.h: Generated from frequency 2100
by gentone. 80 samples */
static unsigned char ecdisa[80] = {
255, 143, 58, 16, 171, 146, 34, 20,
156, 151, 25, 26, 149, 159, 19, 38,
145, 177, 16, 73, 143, 73, 16, 177,
145, 38, 19, 159, 149, 26, 25, 151,
156, 20, 34, 146, 171, 16, 58, 143,
255, 15, 186, 144, 43, 18, 162, 148,
28, 23, 153, 154, 21, 31, 147, 166,
17, 49, 144, 201, 15, 201, 144, 49,
17, 166, 147, 31, 21, 154, 153, 23,
28, 148, 162, 18, 43, 144, 186, 15,
};

9
fskmodem.c
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@ -234,10 +234,15 @@ search_startbit3:
getbyte: getbyte:
/* Need at least 80 samples to be sure we'll have a byte */ /* Need at least 80 samples (for 1200) or
1320 (for 45.5) to be sure we'll have a byte */
if (fskd->nbit < 8) {
if (*len < 1320)
return 0;
} else {
if (*len < 80) if (*len < 80)
return 0; return 0;
}
/* Leemos ahora los bits de datos */ /* Leemos ahora los bits de datos */
j=fskd->nbit; j=fskd->nbit;
for (a=n1=0;j;j--) { for (a=n1=0;j;j--) {

248
include/asterisk/frame.h
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@ -23,20 +23,30 @@ extern "C" {
#include <endian.h> #include <endian.h>
#include <sys/types.h> #include <sys/types.h>
//! Data structure associated with a single frame of data
/* A frame of data read used to communicate between /* A frame of data read used to communicate between
between channels and applications */ between channels and applications */
struct ast_frame { struct ast_frame {
int frametype; /* Kind of frame */ /*! Kind of frame */
int subclass; /* Subclass, frame dependent */ int frametype;
int datalen; /* Length of data */ /*! Subclass, frame dependent */
int timelen; /* Amount of time associated with this frame */ int subclass;
int mallocd; /* Was the data malloc'd? i.e. should we /*! Length of data */
free it when we discard the frame? */ int datalen;
int offset; /* How far into "data" the data really starts */ /*! Amount of time associated with this frame */
char *src; /* Optional source of frame for debugging */ int timelen;
void *data; /* Pointer to actual data */ /*! Was the data malloc'd? i.e. should we free it when we discard the frame? */
struct ast_frame *prev; /* Next/Prev for linking stand alone frames */ int mallocd;
struct ast_frame *next; /* Next/Prev for linking stand alone frames */ /*! How far into "data" the data really starts */
int offset;
/*! Optional source of frame for debugging */
char *src;
/*! Pointer to actual data */
void *data;
/*! Next/Prev for linking stand alone frames */
struct ast_frame *prev;
/*! Next/Prev for linking stand alone frames */
struct ast_frame *next;
/* Unused except if debugging is turned on, but left /* Unused except if debugging is turned on, but left
in the struct so that it can be turned on without in the struct so that it can be turned on without
requiring a recompile of the whole thing */ requiring a recompile of the whole thing */
@ -48,63 +58,109 @@ struct ast_frame_chain {
struct ast_frame_chain *next; struct ast_frame_chain *next;
}; };
#define AST_FRIENDLY_OFFSET 64 /* It's polite for a a new frame to #define AST_FRIENDLY_OFFSET 64 /*! It's polite for a a new frame to
have at least this number of bytes have at least this number of bytes
of offset before your real frame data of offset before your real frame data
so that additional headers can be so that additional headers can be
added. */ added. */
/*! Need the header be free'd? */
#define AST_MALLOCD_HDR (1 << 0) /* Need the header be free'd? */ #define AST_MALLOCD_HDR (1 << 0)
#define AST_MALLOCD_DATA (1 << 1) /* Need the data be free'd? */ /*! Need the data be free'd? */
#define AST_MALLOCD_SRC (1 << 2) /* Need the source be free'd? (haha!) */ #define AST_MALLOCD_DATA (1 << 1)
/*! Need the source be free'd? (haha!) */
#define AST_MALLOCD_SRC (1 << 2)
/* Frame types */ /* Frame types */
#define AST_FRAME_DTMF 1 /* A DTMF digit, subclass is the digit */ /*! A DTMF digit, subclass is the digit */
#define AST_FRAME_VOICE 2 /* Voice data, subclass is AST_FORMAT_* */ #define AST_FRAME_DTMF 1
#define AST_FRAME_VIDEO 3 /* Video frame, maybe?? :) */ /*! Voice data, subclass is AST_FORMAT_* */
#define AST_FRAME_CONTROL 4 /* A control frame, subclass is AST_CONTROL_* */ #define AST_FRAME_VOICE 2
#define AST_FRAME_NULL 5 /* An empty, useless frame */ /*! Video frame, maybe?? :) */
#define AST_FRAME_IAX 6 /* Inter Aterisk Exchange private frame type */ #define AST_FRAME_VIDEO 3
#define AST_FRAME_TEXT 7 /* Text messages */ /*! A control frame, subclass is AST_CONTROL_* */
#define AST_FRAME_IMAGE 8 /* Image Frames */ #define AST_FRAME_CONTROL 4
#define AST_FRAME_HTML 9 /* HTML Frame */ /*! An empty, useless frame */
#define AST_FRAME_NULL 5
/*! Inter Aterisk Exchange private frame type */
#define AST_FRAME_IAX 6
/*! Text messages */
#define AST_FRAME_TEXT 7
/*! Image Frames */
#define AST_FRAME_IMAGE 8
/*! HTML Frame */
#define AST_FRAME_HTML 9
/* HTML subclasses */ /* HTML subclasses */
#define AST_HTML_URL 1 /* Sending a URL */ /*! Sending a URL */
#define AST_HTML_DATA 2 /* Data frame */ #define AST_HTML_URL 1
#define AST_HTML_BEGIN 4 /* Beginning frame */ /*! Data frame */
#define AST_HTML_END 8 /* End frame */ #define AST_HTML_DATA 2
#define AST_HTML_LDCOMPLETE 16 /* Load is complete */ /*! Beginning frame */
#define AST_HTML_NOSUPPORT 17 /* Peer is unable to support HTML */ #define AST_HTML_BEGIN 4
#define AST_HTML_LINKURL 18 /* Send URL, and track */ /*! End frame */
#define AST_HTML_END 8
/*! Load is complete */
#define AST_HTML_LDCOMPLETE 16
/*! Peer is unable to support HTML */
#define AST_HTML_NOSUPPORT 17
/*! Send URL, and track */
#define AST_HTML_LINKURL 18
/*! No more HTML linkage */
#define AST_HTML_UNLINK 19
/*! Reject link request */
#define AST_HTML_LINKREJECT 20
/* Data formats for capabilities and frames alike */ /* Data formats for capabilities and frames alike */
#define AST_FORMAT_G723_1 (1 << 0) /* G.723.1 compression */ /*! G.723.1 compression */
#define AST_FORMAT_GSM (1 << 1) /* GSM compression */ #define AST_FORMAT_G723_1 (1 << 0)
#define AST_FORMAT_ULAW (1 << 2) /* Raw mu-law data (G.711) */ /*! GSM compression */
#define AST_FORMAT_ALAW (1 << 3) /* Raw A-law data (G.711) */ #define AST_FORMAT_GSM (1 << 1)
#define AST_FORMAT_MP3 (1 << 4) /* MPEG-2 layer 3 */ /*! Raw mu-law data (G.711) */
#define AST_FORMAT_ADPCM (1 << 5) /* ADPCM (whose?) */ #define AST_FORMAT_ULAW (1 << 2)
#define AST_FORMAT_SLINEAR (1 << 6) /* Raw 16-bit Signed Linear (8000 Hz) PCM */ /*! Raw A-law data (G.711) */
#define AST_FORMAT_LPC10 (1 << 7) /* LPC10, 180 samples/frame */ #define AST_FORMAT_ALAW (1 << 3)
#define AST_FORMAT_MAX_AUDIO (1 << 15) /* Maximum audio format */ /*! MPEG-2 layer 3 */
#define AST_FORMAT_JPEG (1 << 16) /* JPEG Images */ #define AST_FORMAT_MP3 (1 << 4)
#define AST_FORMAT_PNG (1 << 17) /* PNG Images */ /*! ADPCM (whose?) */
#define AST_FORMAT_H261 (1 << 18) /* H.261 Video */ #define AST_FORMAT_ADPCM (1 << 5)
#define AST_FORMAT_H263 (1 << 19) /* H.263 Video */ /*! Raw 16-bit Signed Linear (8000 Hz) PCM */
#define AST_FORMAT_SLINEAR (1 << 6)
/*! LPC10, 180 samples/frame */
#define AST_FORMAT_LPC10 (1 << 7)
/*! Maximum audio format */
#define AST_FORMAT_MAX_AUDIO (1 << 15)
/*! JPEG Images */
#define AST_FORMAT_JPEG (1 << 16)
/*! PNG Images */
#define AST_FORMAT_PNG (1 << 17)
/*! H.261 Video */
#define AST_FORMAT_H261 (1 << 18)
/*! H.263 Video */
#define AST_FORMAT_H263 (1 << 19)
/* Control frame types */ /* Control frame types */
#define AST_CONTROL_HANGUP 1 /* Other end has hungup */ /*! Other end has hungup */
#define AST_CONTROL_RING 2 /* Local ring */ #define AST_CONTROL_HANGUP 1
#define AST_CONTROL_RINGING 3 /* Remote end is ringing */ /*! Local ring */
#define AST_CONTROL_ANSWER 4 /* Remote end has answered */ #define AST_CONTROL_RING 2
#define AST_CONTROL_BUSY 5 /* Remote end is busy */ /*! Remote end is ringing */
#define AST_CONTROL_TAKEOFFHOOK 6 /* Make it go off hook */ #define AST_CONTROL_RINGING 3
#define AST_CONTROL_OFFHOOK 7 /* Line is off hook */ /*! Remote end has answered */
#define AST_CONTROL_CONGESTION 8 /* Congestion (circuits busy) */ #define AST_CONTROL_ANSWER 4
#define AST_CONTROL_FLASH 9 /* Flash hook */ /*! Remote end is busy */
#define AST_CONTROL_WINK 10 /* Wink */ #define AST_CONTROL_BUSY 5
#define AST_CONTROL_OPTION 11 /* Set a low-level option */ /*! Make it go off hook */
#define AST_CONTROL_TAKEOFFHOOK 6
/*! Line is off hook */
#define AST_CONTROL_OFFHOOK 7
/*! Congestion (circuits busy) */
#define AST_CONTROL_CONGESTION 8
/*! Flash hook */
#define AST_CONTROL_FLASH 9
/*! Wink */
#define AST_CONTROL_WINK 10
/*! Set a low-level option */
#define AST_CONTROL_OPTION 11
/* Option identifiers and flags */ /* Option identifiers and flags */
#define AST_OPTION_FLAG_REQUEST 0 #define AST_OPTION_FLAG_REQUEST 0
@ -114,9 +170,12 @@ struct ast_frame_chain {
#define AST_OPTION_FLAG_ANSWER 5 #define AST_OPTION_FLAG_ANSWER 5
#define AST_OPTION_FLAG_WTF 6 #define AST_OPTION_FLAG_WTF 6
#define AST_OPTION_TONE_VERIFY 1 /* Verify touchtones by muting audio /* Verify touchtones by muting audio transmission
transmission (and reception) and (and reception) and verify the tone is still present */
verify the tone is still present */ #define AST_OPTION_TONE_VERIFY 1
/* Put a compatible channel into TDD (TTY for the hearing-impared) mode */
#define AST_OPTION_TDD 2
struct ast_option_header { struct ast_option_header {
/* Always keep in network byte order */ /* Always keep in network byte order */
@ -134,37 +193,82 @@ struct ast_option_header {
u_int8_t data[0]; u_int8_t data[0];
}; };
/* Request a frame be allocated. source is an optional source of the frame, // Requests a frame to be allocated
len is the requested length, or "0" if the caller will supply the buffer */ /*
* \param source
* Request a frame be allocated. source is an optional source of the frame,
* len is the requested length, or "0" if the caller will supply the buffer
*/
#if 0 /* Unimplemented */
struct ast_frame *ast_fralloc(char *source, int len); struct ast_frame *ast_fralloc(char *source, int len);
#endif
/* Free a frame, and the memory it used if applicable */ //! Frees a frame
/*!
* \param fr Frame to free
* Free a frame, and the memory it used if applicable
* no return.
*/
void ast_frfree(struct ast_frame *fr); void ast_frfree(struct ast_frame *fr);
/* Take a frame, and if it's not been malloc'd, make a malloc'd copy //! Copies a frame
and if the data hasn't been malloced then make the /*!
data malloc'd. If you need to store frames, say for queueing, then * \param fr frame to act upon
you should call this function. */ * Take a frame, and if it's not been malloc'd, make a malloc'd copy
* and if the data hasn't been malloced then make the
* data malloc'd. If you need to store frames, say for queueing, then
* you should call this function.
* Returns a frame on success, NULL on error
*/
struct ast_frame *ast_frisolate(struct ast_frame *fr); struct ast_frame *ast_frisolate(struct ast_frame *fr);
/* Dupliates a frame -- should only rarely be used, typically frisolate is //! Copies a frame
good enough */ /*!
* \param fr frame to copy
* Dupliates a frame -- should only rarely be used, typically frisolate is good enough
* Returns a frame on success, NULL on error
*/
struct ast_frame *ast_frdup(struct ast_frame *fr); struct ast_frame *ast_frdup(struct ast_frame *fr);
//! Chains a frame -- unimplemented
#if 0 /* unimplemented */
void ast_frchain(struct ast_frame_chain *fc); void ast_frchain(struct ast_frame_chain *fc);
#endif
/* Read a frame from a stream or packet fd, as written by fd_write */ //! Reads a frame from an fd
/*!
* \param fd an opened fd to read from
* Read a frame from a stream or packet fd, as written by fd_write
* returns a frame on success, NULL on error
*/
struct ast_frame *ast_fr_fdread(int fd); struct ast_frame *ast_fr_fdread(int fd);
/* Write a frame to an fd */ //! Writes a frame to an fd
/*!
* \param fd Which fd to write to
* \param frame frame to write to the fd
* Write a frame to an fd
* Returns 0 on success, -1 on failure
*/
int ast_fr_fdwrite(int fd, struct ast_frame *frame); int ast_fr_fdwrite(int fd, struct ast_frame *frame);
/* Send a hangup (NULL equivalent) on an fd */ //! Sends a hangup to an fd
/*!
* \param fd fd to write to
* Send a hangup (NULL equivalent) on an fd
* Returns 0 on success, -1 on failure
*/
int ast_fr_fdhangup(int fd); int ast_fr_fdhangup(int fd);
/* Get a format by its name */ //! Get a format from a name
/*!
* \param name string of format
* Gets a format from a name.
* This returns the form of the format in binary on success, 0 on error.
*/
extern int ast_getformatbyname(char *name); extern int ast_getformatbyname(char *name);
//! Pick the best codec
/* Choose the best codec... Uhhh... Yah. */ /* Choose the best codec... Uhhh... Yah. */
extern int ast_best_codec(int fmts); extern int ast_best_codec(int fmts);

74
include/asterisk/tdd.h
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@ -0,0 +1,74 @@
/*
* Asterisk -- A telephony toolkit for Linux.
*
* TTY/TDD Generation support
*
* Copyright (C) 1999, Mark Spencer
*
* Mark Spencer <markster@linux-support.net>
*
* This program is free software, distributed under the terms of
* the GNU General Public License.
*
* Includes code and algorithms from the Zapata library.
*
*/
#ifndef _TDD_H
#define _TDD_H
#define TDD_BYTES_PER_CHAR 2700
struct tdd_state;
typedef struct tdd_state TDDSTATE;
//! CallerID Initialization
/*!
* Initializes the TDD system. Mostly stuff for inverse FFT
*/
extern void tdd_init(void);
//! Generates a CallerID FSK stream in ulaw format suitable for transmission.
/*!
* \param buf Buffer to use. This needs to be large enough to accomodate all the generated samples.
* \param string This is the string to send.
* This function creates a stream of TDD data in ulaw format. It returns the size
* (in bytes) of the data (if it returns a size of 0, there is probably an error)
*/
extern int tdd_generate(struct tdd_state *tdd, unsigned char *buf, char *string);
//! Create a TDD state machine
/*!
* This function returns a malloc'd instance of the tdd_state data structure.
* Returns a pointer to a malloc'd tdd_state structure, or NULL on error.
*/
extern struct tdd_state *tdd_new(void);
//! Read samples into the state machine, and return character (if any).
/*!
* \param tdd Which state machine to act upon
* \param buffer containing your samples
* \param samples number of samples contained within the buffer.
*
* Send received audio to the TDD demodulator.
* Returns -1 on error, 0 for "needs more samples",
* and > 0 (the character) if reception of a character is complete.
*/
extern int tdd_feed(struct tdd_state *tdd, unsigned char *ubuf, int samples);
//! Free a TDD state machine
/*!
* \param tdd This is the tdd_state state machine to free
* This function frees tdd_state tdd.
*/
extern void tdd_free(struct tdd_state *tdd);
//! Generate Echo Canceller diable tone (2100HZ)
/*!
* \param outbuf This is the buffer to receive the tone data
* \param len This is the length (in samples) of the tone data to generate
* Returns 0 if no error, and -1 if error.
*/
extern int ast_tdd_gen_ecdisa(unsigned char *outbuf, int len);
#endif
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